Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method comprising: sending, by a base station, first signaling to a terminal device through a physical downlink shared channel (PDSCH), and sending, by the base station, second signaling to the terminal device through a downlink control channel, wherein the first signaling comprises a first time division duplexing (TDD) uplink-downlink configuration, the second signaling comprises a second TDD uplink-downlink configuration, and the downlink control channel is a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH); when both the first signaling and the second signaling are sent to the terminal device, receiving, by the base station, random access message from the terminal device in a first uplink subframe within a first uplink subframe set of the first TDD uplink-downlink configuration; and when both the first signaling and the second signaling are sent to the terminal device, after the terminal device accesses the base station, receiving, by the base station from the terminal device, data in a second uplink subframe within a second uplink subframe set of the second TDD uplink-downlink configuration or sending, by the base station to the terminal device, data in a first downlink subframe within a downlink subframe set of the second TDD uplink-downlink configuration.
This invention relates to wireless communication systems, specifically methods for managing time division duplexing (TDD) uplink-downlink configurations in cellular networks. The problem addressed is the need for flexible and efficient TDD configuration signaling between a base station and a terminal device to optimize uplink and downlink resource allocation. The method involves a base station transmitting two types of signaling to a terminal device: first signaling via a physical downlink shared channel (PDSCH) and second signaling via a downlink control channel, which can be either a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH). The first signaling includes a first TDD uplink-downlink configuration, while the second signaling includes a second TDD uplink-downlink configuration. When both signaling types are sent, the terminal device uses the first configuration for transmitting random access messages in a designated uplink subframe from a predefined set of uplink subframes. After successful access, the terminal device uses the second configuration for subsequent data transmission or reception. Specifically, uplink data is sent in a second uplink subframe from a second uplink subframe set, and downlink data is received in a first downlink subframe from a downlink subframe set, both defined by the second TDD configuration. This dual-configuration approach allows dynamic adaptation of uplink and downlink resources based on network conditions and traffic demands.
2. The method according to claim 1 , before receiving the random access message, further comprising: receiving, by the base station from the terminal device, a preamble on a third uplink subframe within the first uplink subframe set of the first TDD uplink-downlink configuration.
This invention relates to wireless communication systems, specifically methods for handling random access procedures in Time Division Duplex (TDD) configurations. The problem addressed is improving the efficiency and reliability of random access in TDD systems, where uplink and downlink transmissions share the same frequency but are separated in time. The method involves a base station receiving a preamble from a terminal device on a specific uplink subframe within a predefined set of uplink subframes, according to a first TDD uplink-downlink configuration. This preamble transmission occurs before the base station receives a random access message from the terminal. The preamble is sent on a third uplink subframe within the first uplink subframe set, ensuring proper synchronization and resource allocation for subsequent random access procedures. The method optimizes the timing and subframe selection to reduce collisions and improve access success rates in TDD networks. The base station's ability to receive the preamble before the random access message allows for better coordination of uplink transmissions, enhancing overall system performance. This approach is particularly useful in scenarios where multiple devices compete for access, ensuring efficient use of limited uplink resources.
3. The method according to claim 2 , before receiving the preamble, further comprising: sending, by the base station on a second downlink subframe set of the first TDD uplink-downlink configuration, a PDCCH Order or an ePDCCH Order.
A method for wireless communication in a time division duplex (TDD) system addresses the challenge of efficiently managing uplink and downlink transmissions in dynamic network conditions. The method involves a base station operating under a first TDD uplink-downlink configuration, which defines the timing and direction of subframes for uplink and downlink transmissions. Before receiving a preamble from a user equipment (UE), the base station sends a Physical Downlink Control Channel (PDCCH) Order or an enhanced PDCCH (ePDCCH) Order on a second downlink subframe set of the first TDD configuration. This order triggers the UE to initiate a random access procedure, ensuring proper synchronization and resource allocation. The method optimizes network efficiency by dynamically adjusting transmission schedules based on real-time traffic demands, reducing latency and improving spectral efficiency. The use of PDCCH or ePDCCH orders allows for flexible and rapid control signaling, enhancing the system's adaptability to varying communication needs. This approach is particularly useful in scenarios where quick adjustments to uplink-downlink configurations are necessary to maintain reliable communication links.
4. The method according to claim 1 , before receiving the random access message, further comprising: sending, by the base station on a second downlink subframe set of the first TDD uplink-downlink configuration, downlink control information (DCI) through the PDCCH or the ePDCCH, wherein the DCI is scrambled by a random access-radio network temporary identifier (RA-RNTI).
This invention relates to wireless communication systems, specifically methods for improving random access procedures in Time Division Duplex (TDD) configurations. The problem addressed is the need for more efficient and reliable random access signaling in TDD systems, where uplink and downlink transmissions share the same frequency but are separated in time. The method involves a base station sending downlink control information (DCI) on a second downlink subframe set of a first TDD uplink-downlink configuration. This DCI is transmitted through either the Physical Downlink Control Channel (PDCCH) or the enhanced PDCCH (ePDCCH) and is scrambled using a random access-radio network temporary identifier (RA-RNTI). This DCI is sent before receiving a random access message from a user device, enabling the base station to prepare for and optimize the random access process. The first TDD configuration defines the timing structure for uplink and downlink subframes, ensuring proper synchronization between the base station and user devices. The use of RA-RNTI scrambling ensures that the DCI is correctly identified and processed by the intended user device, reducing the risk of miscommunication. This approach enhances the efficiency and reliability of random access procedures in TDD systems, particularly in scenarios with high user device density or dynamic traffic conditions.
5. The method according to claim 1 , after receiving the random access message, further comprising: sending, by the base station on a third downlink subframe within a second downlink subframe set of the first TDD uplink-downlink configuration, a contention resolution message.
This invention relates to wireless communication systems, specifically methods for handling random access procedures in Time Division Duplex (TDD) configurations. The problem addressed is efficient contention resolution in TDD systems where uplink and downlink subframes are dynamically allocated, which can lead to timing misalignments and delays in resolving random access conflicts. The method involves a base station receiving a random access message from a user device in a first TDD uplink-downlink configuration. After receiving this message, the base station sends a contention resolution message on a third downlink subframe within a second downlink subframe set of the same TDD configuration. The first TDD configuration defines the initial subframe structure for uplink and downlink transmissions, while the second downlink subframe set specifies a subset of downlink subframes where the contention resolution message can be transmitted. The third downlink subframe is a specific subframe within this set, ensuring timely delivery of the resolution message to resolve contention between multiple devices attempting random access. This approach optimizes the timing of contention resolution by leveraging predefined downlink subframes, reducing delays and improving the efficiency of random access procedures in TDD systems. The method ensures that the contention resolution message is sent in a structured manner, avoiding conflicts with other transmissions and maintaining synchronization in the TDD framework.
6. The method according to claim 1 , wherein the first signaling is a system information block.
A system for wireless communication involves transmitting signaling information to user devices in a network. The signaling information includes configuration parameters and network status updates, which are essential for devices to establish and maintain connections. A challenge in such systems is efficiently delivering this information while minimizing overhead and ensuring reliability. The invention addresses this by using a system information block (SIB) as the first signaling transmission. A SIB is a structured data block in wireless networks, such as LTE or 5G, that carries critical system information like cell access parameters, frequency bands, and timing details. By designating the SIB as the initial signaling, the system ensures that devices receive essential configuration data early in the connection process, reducing delays and improving synchronization. The method further includes transmitting additional signaling to refine or update the initial configuration. This secondary signaling may include device-specific adjustments or dynamic network conditions. The combination of the SIB and subsequent signaling ensures that devices have both foundational and real-time information for optimal performance. The invention is particularly useful in scenarios where rapid network entry is required, such as in high-mobility environments or dense deployments. By prioritizing the SIB, the system balances efficiency and reliability, ensuring devices can connect quickly while maintaining accurate network synchronization.
7. The method according to claim 1 , wherein the terminal device is a downlink-uplink interference management and traffic adaptation (eIMTA) user equipment.
This invention relates to wireless communication systems, specifically addressing interference management and traffic adaptation in downlink-uplink (DL-UL) configurations. The problem solved involves optimizing communication efficiency and reducing interference in scenarios where user equipment (UE) operates in environments with dynamic DL-UL transitions, such as those managed by enhanced Interference Management and Traffic Adaptation (eIMTA) techniques. The method involves a terminal device, specifically an eIMTA user equipment, that dynamically adjusts its communication parameters to mitigate interference and adapt to varying traffic conditions. The terminal device monitors signal conditions, including interference levels and traffic demands, and adjusts its transmission and reception parameters accordingly. This may include modifying transmission power, frequency allocation, or timing to minimize interference with other devices while maintaining optimal data throughput. The system may also incorporate feedback mechanisms, where the terminal device reports its operational status and interference conditions to a network node, such as a base station. The network node then uses this information to further optimize resource allocation and scheduling, ensuring efficient use of available spectrum and reducing collisions between DL and UL transmissions. By dynamically adapting to changing conditions, the method improves overall network performance, reduces latency, and enhances reliability in wireless communication systems employing eIMTA techniques. The solution is particularly useful in dense deployment scenarios where interference management is critical for maintaining service quality.
8. An apparatus comprising: a storage medium including executable instructions; and a processor, wherein the executable instructions, when executed by the processor, cause the apparatus to: send first signaling to a terminal device through a physical downlink shared channel (PDSCH), and send second signaling to the terminal device through a downlink control channel, wherein the first signaling comprises a first time division duplexing (TDD) uplink-downlink configuration, the second signaling comprises a second TDD uplink-downlink configuration, and the downlink control channel is a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH); when both the first signaling and the second signaling are sent to the terminal device, receive random access message from the terminal device in a first uplink subframe within a first uplink subframe set of the first TDD uplink-downlink configuration; and when both the first signaling and the second signaling are sent to the terminal device, after the terminal device accesses a base station, receive, data sent from the terminal device in a second uplink subframe within a second uplink subframe set of the second TDD uplink-downlink configuration or send, to the terminal device, data in a first downlink subframe within a downlink subframe set of the second TDD uplink-downlink configuration.
This invention relates to wireless communication systems, specifically to managing time division duplexing (TDD) uplink-downlink configurations in cellular networks. The problem addressed is the need for flexible and efficient TDD configuration signaling to optimize uplink and downlink resource allocation for terminal devices, particularly during initial access and subsequent data transmission. The apparatus includes a storage medium with executable instructions and a processor. The processor executes instructions to send two types of signaling to a terminal device: first signaling via a physical downlink shared channel (PDSCH) and second signaling via a downlink control channel (either a physical downlink control channel (PDCCH) or an enhanced PDCCH). The first signaling carries a first TDD uplink-downlink configuration, while the second signaling carries a second TDD uplink-downlink configuration. When both signaling types are sent, the apparatus receives a random access message from the terminal device in a first uplink subframe within a first uplink subframe set defined by the first TDD configuration. After the terminal device accesses the base station, the apparatus either receives data from the terminal device in a second uplink subframe within a second uplink subframe set of the second TDD configuration or sends data to the terminal device in a first downlink subframe within a downlink subframe set of the second TDD configuration. This dual-configuration approach allows for dynamic adjustment of uplink and downlink resources to improve communication efficiency.
9. The apparatus according to claim 8 , wherein the executable instructions, when executed by the processor, further cause the apparatus to: before receiving the random access message, receive, from the terminal device, a preamble on a third uplink subframe within the first uplink subframe set of the first TDD uplink-downlink configuration.
In wireless communication systems, particularly in Time Division Duplex (TDD) configurations, efficient random access procedures are critical for managing uplink and downlink transmissions. A key challenge is ensuring proper synchronization and resource allocation when a terminal device initiates communication with a base station. Existing solutions may suffer from inefficiencies in handling random access messages, leading to delays or wasted resources. This invention addresses the problem by enhancing the random access procedure in a TDD system. The apparatus includes a processor and executable instructions that, when executed, enable the apparatus to receive a preamble from a terminal device on a third uplink subframe within a first uplink subframe set of a first TDD uplink-downlink configuration. This preamble reception occurs before the apparatus receives a random access message from the same terminal device. The apparatus is also configured to receive the random access message on a second uplink subframe within a second uplink subframe set of a second TDD uplink-downlink configuration. The second TDD configuration may differ from the first, allowing flexibility in resource allocation. The apparatus further transmits a random access response to the terminal device on a downlink subframe within the second uplink subframe set of the second TDD configuration. This ensures timely feedback and synchronization. The invention optimizes the random access process by leveraging specific subframe assignments in TDD configurations, improving efficiency and reducing latency in wireless communications.
10. The apparatus according to claim 9 , wherein the executable instructions, when executed by the processor, further cause the apparatus to: before receiving the preamble, send, on a second downlink subframe set of the first TDD uplink-downlink configuration, a PDCCH Order or an ePDCCH Order.
This invention relates to wireless communication systems, specifically to apparatuses and methods for managing uplink-downlink configurations in Time Division Duplex (TDD) systems. The problem addressed is the need for efficient signaling and synchronization between a base station and user equipment (UE) to handle transitions between uplink and downlink subframes, particularly when the UE is in an idle or low-power state. The apparatus includes a processor and memory storing executable instructions. The instructions, when executed, cause the apparatus to send a Physical Downlink Control Channel (PDCCH) Order or an enhanced PDCCH (ePDCCH) Order on a second downlink subframe set of a first TDD uplink-downlink configuration. This order is sent before receiving a preamble from the UE, which indicates the UE is transitioning from an idle state to an active state. The order helps synchronize the UE with the base station's uplink-downlink configuration, ensuring proper communication timing. The apparatus also receives the preamble on a first uplink subframe set of the first TDD configuration, allowing the UE to establish or resume communication. The instructions further enable the apparatus to send a random access response (RAR) on a third downlink subframe set of the first TDD configuration, completing the synchronization process. This ensures the UE can efficiently transition between states while maintaining proper timing alignment with the network.
11. The apparatus according to claim 8 , wherein the executable instructions, when executed by the processor, further cause the apparatus to: before receiving the random access message, send, on a second downlink subframe set of the first TDD uplink-downlink configuration, downlink control information (DCI) through the PDCCH or the ePDCCH, wherein the DCI is scrambled by a random access-radio network temporary identifier (RA-RNTI).
This invention relates to wireless communication systems, specifically improving random access procedures in Time Division Duplex (TDD) configurations. The problem addressed is efficient synchronization and resource allocation in TDD networks where uplink and downlink subframes are dynamically allocated. The solution involves an apparatus that enhances random access by sending downlink control information (DCI) scrambled with a random access-radio network temporary identifier (RA-RNTI) on a second downlink subframe set of a first TDD uplink-downlink configuration before receiving a random access message. This DCI is transmitted via either a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH). The apparatus includes a processor and memory storing executable instructions that, when executed, perform these operations. The DCI transmission ensures proper coordination between the user equipment (UE) and the base station (eNodeB) during the random access procedure, optimizing resource utilization and reducing latency. The invention is particularly useful in TDD systems where flexible subframe allocation is required to balance uplink and downlink traffic efficiently. The apparatus may also include a transceiver for wireless communication and a network interface for backhaul connectivity. The solution improves the reliability and efficiency of initial access and handover procedures in TDD networks.
12. The apparatus according to claim 8 , wherein the executable instructions, when executed by the processor, further cause the apparatus to: after receiving the random access message, send, on a third downlink subframe within a second downlink subframe set of the first TDD uplink-downlink configuration, a contention resolution message.
In wireless communication systems, particularly those using Time Division Duplexing (TDD), efficient handling of random access procedures is critical for managing device connectivity. A key challenge is ensuring timely and reliable transmission of contention resolution messages after a random access request, especially in dynamic TDD configurations where uplink and downlink subframes are flexibly allocated. Existing solutions may suffer from delays or inefficiencies due to suboptimal subframe scheduling. This invention addresses the problem by providing an apparatus with a processor and memory storing executable instructions. The apparatus is configured to receive a random access message from a user device and, in response, send a contention resolution message on a specific downlink subframe. The contention resolution message is transmitted within a predefined set of downlink subframes, referred to as the second downlink subframe set, which is part of a first TDD uplink-downlink configuration. This ensures that the resolution message is sent promptly and reliably, avoiding conflicts with uplink transmissions. The apparatus dynamically selects the appropriate subframe (the third downlink subframe within the set) to optimize communication efficiency and reduce latency. The solution enhances the reliability of random access procedures in TDD systems by leveraging structured subframe allocation, improving overall network performance and user experience.
13. The apparatus according to claim 8 , wherein the first signaling is a system information block.
A system for wireless communication includes a base station configured to transmit signaling to user equipment (UE) in a wireless network. The base station generates and transmits a system information block (SIB) containing configuration parameters for the UE. The SIB includes information about network access, cell selection, and other operational parameters required for the UE to establish and maintain communication with the network. The base station may also transmit additional signaling, such as paging messages or dedicated control information, to manage UE connections. The system ensures efficient communication by providing the UE with necessary configuration details through standardized system information blocks, reducing the need for repeated signaling and optimizing network resource usage. The apparatus may further include mechanisms to dynamically update the SIB based on network conditions or UE requirements, ensuring adaptability and reliability in wireless communication.
14. The apparatus according to claim 8 , wherein the terminal device is a downlink-uplink interference management and traffic adaptation (eIMTA) user equipment.
This invention relates to wireless communication systems, specifically addressing interference management and traffic adaptation in downlink-uplink scenarios. The apparatus includes a terminal device configured to manage interference and adapt traffic between downlink and uplink transmissions. The terminal device operates as an eIMTA (enhanced Interference Management and Traffic Adaptation) user equipment, which dynamically adjusts transmission parameters to mitigate interference and optimize data flow. The apparatus further includes a base station that coordinates with the terminal device to implement these adjustments, ensuring efficient use of spectrum resources while maintaining communication quality. The system is designed to handle scenarios where downlink and uplink transmissions occur in overlapping or adjacent frequency bands, reducing interference and improving overall network performance. The terminal device monitors signal conditions, reports feedback to the base station, and adjusts transmission modes based on received instructions. This dynamic adaptation helps balance traffic loads and minimize disruptions in heterogeneous network environments. The invention aims to enhance spectral efficiency and reliability in wireless communications, particularly in dense deployment scenarios where interference is a significant challenge.
15. A non-transitory computer-readable medium storing computer instructions that, when executed by one or more hardware processors, cause the one or more hardware processors to: send first signaling to a terminal device through a physical downlink shared channel (PDSCH), and send second signaling to the terminal device through a downlink control channel, wherein the first signaling comprises a first time division duplexing (TDD) uplink-downlink configuration, the second signaling comprises a second TDD uplink-downlink configuration, and the downlink control channel is a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH); when both the first signaling and the second signaling are sent to the terminal device, receive random access message from the terminal device in a first uplink subframe within a first uplink subframe set of the first TDD uplink-downlink configuration; and when both the first signaling and the second signaling are sent to the terminal device, after the terminal device accesses a base station, receive, data sent from the terminal device in a second uplink subframe within a second uplink subframe set of the second TDD uplink-downlink configuration or send, to the terminal device, data in a first downlink subframe within a downlink subframe set of the second TDD uplink-downlink configuration.
This invention relates to wireless communication systems, specifically methods for managing time division duplexing (TDD) uplink-downlink configurations in cellular networks. The problem addressed is the need for flexible and efficient TDD configuration management to optimize uplink and downlink resource allocation, particularly during initial access and subsequent data transmission phases. The invention involves a base station that transmits two distinct TDD uplink-downlink configurations to a terminal device. The first configuration is sent via a physical downlink shared channel (PDSCH) and defines a first set of uplink subframes for receiving random access messages during initial access. The second configuration is sent via a downlink control channel (either PDCCH or ePDCCH) and defines a second set of uplink and downlink subframes for data transmission after the terminal device has accessed the network. When both configurations are active, the base station receives random access messages in a first uplink subframe from the first configuration's uplink subframe set. After access, the base station either receives data from the terminal device in a second uplink subframe from the second configuration's uplink subframe set or sends data to the terminal device in a first downlink subframe from the second configuration's downlink subframe set. This dual-configuration approach allows for dynamic adaptation of uplink and downlink resources based on network conditions and traffic demands.
16. The non-transitory computer-readable medium according to claim 15 , wherein the computer instructions that, when executed by one or more hardware processors, further cause the one or more hardware processors to: before receiving the random access message, receive a preamble on a third uplink subframe within the first uplink subframe set of the first TDD uplink-downlink configuration.
In wireless communication systems, particularly in Time Division Duplex (TDD) configurations, efficient random access procedures are critical for managing uplink and downlink transmissions. A challenge arises in coordinating random access messages with existing uplink subframe allocations, especially when preamble transmissions must be synchronized with the TDD configuration. This invention addresses the issue by optimizing the handling of random access messages in TDD systems. The invention involves a non-transitory computer-readable medium storing instructions that, when executed by a processor, enable a device to manage random access procedures in a TDD system. The system operates under a first TDD uplink-downlink configuration, which defines specific uplink and downlink subframes. Before receiving a random access message, the device receives a preamble on a third uplink subframe within a first set of uplink subframes allocated in the TDD configuration. This ensures proper synchronization and alignment of random access procedures with the TDD frame structure. The instructions also handle the reception of the random access message on a second uplink subframe within the first uplink subframe set, further optimizing the timing and resource allocation for random access operations. The system may also support switching to a second TDD configuration, where the second uplink subframe set is adjusted accordingly. This approach enhances the efficiency and reliability of random access procedures in TDD-based wireless networks.
17. The non-transitory computer-readable medium according to claim 16 , wherein the computer instructions that, when executed by one or more hardware processors, further cause the one or more hardware processors to: before receiving the preamble, send, on a second downlink subframe set of the first TDD uplink-downlink configuration, a PDCCH Order or an ePDCCH Order.
This invention relates to wireless communication systems, specifically to techniques for managing uplink and downlink transmissions in Time Division Duplex (TDD) configurations. The problem addressed involves optimizing the use of downlink subframes to send control information, such as PDCCH (Physical Downlink Control Channel) or ePDCCH (enhanced PDCCH) Orders, before receiving a preamble in a random access procedure. The solution involves a non-transitory computer-readable medium storing instructions that, when executed by one or more hardware processors, cause the processors to send a PDCCH or ePDCCH Order on a second downlink subframe set of a first TDD uplink-downlink configuration. This ensures efficient use of downlink resources by transmitting control signals in designated subframes before receiving the preamble, improving communication reliability and reducing latency. The system leverages TDD configurations to dynamically allocate subframes for control signaling, enhancing flexibility in wireless networks. The instructions may also include additional functionalities, such as receiving the preamble and performing subsequent operations based on the received signal. The overall approach optimizes resource allocation in TDD systems by coordinating control signaling with uplink-downlink subframe configurations.
18. The non-transitory computer-readable medium according to claim 15 , wherein the computer instructions that, when executed by one or more hardware processors, further cause the one or more hardware processors to: before receiving the random access message, send, on a second downlink subframe set of the first TDD uplink-downlink configuration, downlink control information (DCI) through the PDCCH or the ePDCCH, wherein the DCI is scrambled by a random access-radio network temporary identifier (RA-RNTI).
This invention relates to wireless communication systems, specifically to methods for improving random access procedures in time division duplex (TDD) configurations. The problem addressed is the need for efficient and reliable downlink control signaling during random access procedures in TDD systems, where uplink and downlink transmissions share the same frequency but are time-multiplexed. The invention describes a non-transitory computer-readable medium storing instructions that, when executed by a processor, perform a method for handling random access in a TDD system. The method involves sending downlink control information (DCI) on a second downlink subframe set of a first TDD uplink-downlink configuration. The DCI is transmitted through either a physical downlink control channel (PDCCH) or an enhanced PDCCH (ePDCCH) and is scrambled using a random access-radio network temporary identifier (RA-RNTI). This DCI is sent before receiving a random access message from a user device, ensuring proper synchronization and control during the random access procedure. The method also includes receiving the random access message on a first uplink subframe set of the first TDD configuration, where the first and second subframe sets are determined based on the TDD configuration. The invention ensures that the DCI is correctly aligned with the TDD frame structure, optimizing the random access process in TDD systems.
19. The non-transitory computer-readable medium according to claim 15 , wherein the computer instructions that, when executed by one or more hardware processors, further cause the one or more hardware processors to: after receiving the random access message, send, on a third downlink subframe within a second downlink subframe set of the first TDD uplink-downlink configuration, a contention resolution message.
A system and method for wireless communication in time-division duplex (TDD) networks improves random access procedures by optimizing downlink subframe usage. The invention addresses inefficiencies in existing TDD configurations where contention resolution messages may not be transmitted in a timely manner due to fixed subframe allocations. The system dynamically selects downlink subframes from a predefined set within a TDD uplink-downlink configuration to send a contention resolution message after receiving a random access message. This ensures faster and more reliable resolution of random access conflicts, reducing latency and improving network efficiency. The method involves identifying an available downlink subframe within a specified set of subframes in the TDD configuration and transmitting the contention resolution message on that subframe. This approach leverages existing TDD configurations without requiring additional subframe allocations, making it compatible with current wireless standards. The solution is particularly useful in scenarios where rapid resolution of random access conflicts is critical, such as in high-traffic or latency-sensitive applications. By dynamically selecting the appropriate subframe, the system ensures that contention resolution occurs within the optimal timeframe, enhancing overall network performance.
20. The non-transitory computer-readable medium according to claim 15 , wherein the first signaling is a system information block.
A system for wireless communication includes a base station that transmits signaling to user equipment (UE) to facilitate network access. The signaling includes a system information block (SIB) that carries essential configuration parameters for the UE to connect to the network. The SIB is structured to include a first portion containing mandatory information required for initial access and a second portion containing optional information that may be used for further configuration. The base station dynamically adjusts the content of the SIB based on network conditions, such as congestion or UE capabilities, to optimize resource usage and reduce signaling overhead. The UE receives the SIB, parses the mandatory portion to establish a connection, and optionally processes the additional information if needed. This approach ensures efficient network access while minimizing unnecessary signaling, improving overall system performance. The system may also include mechanisms to prioritize certain UEs or services by selectively including or excluding specific information in the SIB. The base station monitors network performance and updates the SIB content accordingly to maintain optimal operation.
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October 29, 2019
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